108 K. J. Bush — Marine Gastropods referred to 



mas, 1877, as its only living representative, and described the new 

 species Japonica, which in 1868 he stated was the Liotia pilula 

 Dunker, and transferred it to the genus Collonia Gray. 



I very much doubt the near relation of this genus to Cyclostrema. 

 The peculiarity of tl\e aperture is much like that seen in Leiico- 

 rhynchia Crosse, 1867, type, X. Caledonica Crosse (Journ. de Conch,, 

 XV, p. 320, pi. 11, f. 4), and Craspedostoma Lindstrom, 1884, type, 

 (J. elegantulum Lind. (Fischer's Manuel, p. 831, f. 588). 



Morchia A. Adams, 1860, non Albers,' M. Meyer, or Von Martens. Type, M. 

 obvoluta A. Ad. St. of Korea, 26 fathoms. 



" Shell obliquely ovate, widely umbilicate, depressed, convex from 

 above, plane or flattened from beneath ; whorls rapidly increasing, 

 the last dilated, covering all the volutions nearly to the apex. 

 Aperture oblong, oblique, subhorizontal, dilated or expanded below, 

 angulated above ; peritreme continuous, thickened {incrassato) y 



Type, M. ohvoluta A. Ad. Figured in Thes. Conch., copied by 

 Try on. 



" Shell small, opaque, white, angulated at the periphery, orna- 

 mented with crowded incremental strise ; umbilicus wide, crenulated 

 at the suture." 



" This curious little genus most nearly resembles Teinostoma, but 

 the base is not covered with a callus, and the mouth is not produced. 

 The last whorl embraces the others, as it does in Neritula and 

 Cyclops. Both Morchia and Teinostonia, however, together with 

 VitrineUa, are not nacreous," etc., etc. Ann. Mag. Nat. Hist., v, 

 p. 301, 1860. P. Z. S., p. 74, 1863. 



The affinities of this genus ai"e very doubtful, but the thickened 

 peritreme would prevent its being placed with the Vitrinellidae. 



Daronia A. Adams, 1861. Type, I), spirula A. Ad. Philippines. 



Serpularia Romer, 1843 (1 Spira Brown, 1838), H. and A. Adams, Gen. Rec. 

 Moll., p. 406, 1858. 



" Shell orbicular, discoidal, evolute ; spire depressly concave ; 

 whorls rounded, disunited ; ajDerture circular ; peritreme contin- 

 uous." 



Type, D. spirida A. Ad. Figured P. Z. S., 1 850, and Thes. Conch., 

 copied by Tryon. The original figure differs considerably from 

 those in Thes. Conch., as copied by Tryon. 



^Morchia Albers, \%hQ = Macrocyclis Beck, 1837, pro parte. Morchia M. Meyer 

 1860 = Burtinella Morch, 1861. (Fischer's Manuel, pp. 456 and 692.) 



